Seismic running safety assessment for stochastic vibration of train–bridge coupled system

• Autorzy: Zhao Han , Wei Biao , Jiang Lizhong , Xiang Ping

Identyfikatory

DOI

10.1007/s43452-022-00451-3

• Języki publikacji: EN

Abstrakty

EN

With the rapid development of high-speed railway, the seismic running safety problem of high-speed train passing on bridge is becoming increasingly prominent. Since different wheel–rail contact states including uplifting, climbing up, detachment, recontact and derailment have been introduced into the simulation of train–bridge coupled (TBC) system, there are many problems arising for the mainstream derailment index in evaluating seismic running safety and stochastic analysis of train. To this end, a seismic running safety assessment for stochastic response of TBC system was first proposed in this paper. In this system, a detailed wheel–rail contact model was built to calculate the time-varying contact point and the contact force, which can be applied to simulate the detachment and recontact between the wheel flange and rail. Meanwhile, a stochastic analysis framework for derailment of the TBC system is developed. The stochastic vibration of a high-speed train traversing a multi-span prestressed simply supported box-girder bridge under earthquake with random magnitude was studied. In addition, an improved train running safety index, lateral wheel–rail relative displacement, was proposed and compared with the derailment factor and the offload factor to verify its feasibility. It shows an intuitive result as a derailment index in a stochastic train running safety analysis under earthquake. Furthermore, the lateral wheel–rail relative displacement and pertinent derailment probability were significantly affected by the intensity of the earthquake. The methodology herein can be helpful in seismic running safety assessment of high-speed train.

Słowa kluczowe

EN

train–bridge coupled; derailment; earthquake; running safety assessment; stochastic vibration

PL

pociąg; wykolejenie; trzęsienie ziemi; ocena bezpieczeństwa

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 4
• Strony: art. no. e180, 2022
• Opis fizyczny: Bibliogr. 54 poz., fot., rys., tab., wykr.

Twórcy

autor

Zhao Han

• School of Civil Engineering, Central South University, Changsha 410075, Hunan, China

autor

Wei Biao

• School of Civil Engineering, Central South University, Changsha 410075, Hunan, China

autor

Jiang Lizhong

• School of Civil Engineering, Central South University, Changsha 410075, Hunan, China

autor

Xiang Ping

• School of Civil Engineering, Central South University, Changsha 410075, Hunan, China
• Technology and Equipment of Rail Transit Operation and Maintenance Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, China
• Hunan International Scientific and Technological Innovation Cooperation Base of Advanced Construction and Maintenance Technology of Highway, Changsha University of Science & Technology, Changsha, China
• Failure Mechanics & Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
• Chongqing Jiaotong University, National & Local Joint Laboratory of Transportation and Civil Engineering Materials, Chongqing, China

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)